- Are you talking about capture time ?
- I am quite not sure what do you mean by "exposure time"
- Post a screen shot of what you can see in your LR metadata panel.
- Also let us know how are you changing the "exposure time" of the images.
If you mean 'Capture time' then its a setting in the Catalog preferences:
"Write date or time changes into proprietary raw files"
Comes with a warning...
you're right. I meant 'capture time', of course. Im not a native speaker, pardon.
meanwhile I managed to change the capture time (see screenshot *_01). also I have learned that you have to change the changes by 'ctrl+s' before closing lightroom if you don't want the changes only to take place in the lr catalogue.
but I have still one question: does anyone know how to change the date of digitalization (see screenshot *_02)?
If I could change this entry the metadata would be consistent.
by the way: I use dng files only (out of camera).
I have learned that you have to change the changes by 'ctrl+s' before closing lightroom if you don't want the changes only to take place in the lr catalogue.
You could also set the option Catalog Settings > Metadata > Automatically Write Changes Into XMP, which will automatically save any changes made in the catalog back to the photos themselves.
how to change the date of digitalization
LR doesn't provide any way to change EXIF Date Time Digitized. You'd have to use an external tool such as the free ExiftTool, or a plugin that invokes ExifTool for you. Either method is mildly inconvenient.
Also, in general the only reason to change Date Time Digitized is if you are scanning prints, slides, or negatives, and you want to record when they were scanned as well as when the original image was captured on film (when the shutter was pressed).
For images from digital cameras, the industry metadata standards do call for Date Time Digitized to be the same as Date Time Original. But in practice, photo software and user workflows generally ignore Date Time Digitized for images from digital cameras. So nothing bad results from the fact that LR's Edit Capture Time command doesn't change Date Time Digitized.